Unification: Drone config, Makefile, structure and badges

Makefile

@@ -0,0 +1,32 @@
+.PHONY: clean deps fmt vet test docker
+
+EXECUTABLE ?= drone-docker
+IMAGE ?= plugins/$(EXECUTABLE)
+CI_BUILD_NUMBER ?= 0
+
+LDFLAGS = -X "main.buildDate=$(shell date -u '+%Y-%m-%d %H:%M:%S %Z')"
+PACKAGES = $(shell go list ./... | grep -v /vendor/)
+
+clean:
+	go clean -i ./...
+
+deps:
+	go get -t ./...
+
+fmt:
+	go fmt $(PACKAGES)
+
+vet:
+	go vet $(PACKAGES)
+
+test:
+	@for PKG in $(PACKAGES); do go test -cover -coverprofile $$GOPATH/src/$$PKG/coverage.out $$PKG || exit 1; done;
+
+docker:
+	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags '-s -w $(LDFLAGS)'
+	docker build --rm -t $(IMAGE) .
+
+$(EXECUTABLE): $(wildcard *.go)
+	go build -ldflags '-s -w $(LDFLAGS)'
+
+build: $(EXECUTABLE)